Siphon attachment for flush tanks



March 24, 1925. 1,530,786

w. MUIR szraou ATTACHMENT FOR muss m Filed'May 5,1921

2 Shets-Sheet 1 (NIENTOR,

lit)

Patented Mar. 24, 1925.

r ori ice.

;v WILLIAM mom, or new YORK, N. Y.

srrnon ATTACHMENT FOR'FLUSH TANKS.

Application 'filed May 3,

To all whey-a it may] concern:

Be it known that I, VILLIAM Mum, a citizen of the United States, and a resident of the city of New York, borough of Manhattan. county and State of New York, have invented certain new and useful 1111 pro-ven'ients in Siphon Attachments for Flush Tanks, of which the following is a lull, clear, and exact description.

Among the principal objects whieh'the present invention has in View are: to insure a continuous How of the siphoned liquid: to provide a sufficient amount of flushing liquid; to insure the siphoning operation oi the attachment; to strengthen the constructionj and to simplify and cheapen the construction.

Drawin gs I Figure 1 is a side elevation of a siphoning attachment, constructed and arranged in accordance with the present invention, the siphon being shown installed as in service;

Figure 2 is a side view of the same;

Figure 3 is a horizontal section of the same, the section being taken as on the line -}-3 in Figure 1;

Figure A is a vertical section on reduced scaleoit' the siphon, the section being taken as on the line 4-& in Figure 3, the operating parts thereof being shown as in inactive position;

Figure 5 is a similar view showing the active parts as in active position;

Figure- 6 is a vertical section oi the siphon rise and spill, with the active parts in elevated position, the section being taken as on the line 6-6 in Figure 3;

" lligure 7 is a detail View on enlarged scale of the siphon starting apparatus of the attachment.

Description As seen in the drawings, the siphon com prises a riser 12, and a spillway'lii. As seen best in Figure 3 of the drawings, the riser 12 has a much greater area than the spillway 13, from whiehit is separated normally by the partition 1 1. By reason of the disparity in size of the riser 12 and spillway 13, the filling of the spillway 13 is insured. The walls of the riser 12 are parallel throughout, while the spillway 13'is diminished at the bottom to form a contracted opening 15. The riser 12 and spillway 13 1921. Serial Not 466,373. 2

are provided with the bolting flange 16.

The cover 17 is secured to the flange 16' by means of screws 18, an air-tight joint being pended theguide rod and-tube 20. The rod 19 and tube 20 are the same exterior diameter and form runways for the thini bles 21, which, as best seen in Figure 7 of the drawings, are screw-threaded into the valve table 22. The table 22supports a valve plate which conforms to the interior dimension of the riser A central opening 24 is'i'ornied inthe valve plate 23, for the passage of water through.

The table 22 is supported by ascrewthreaded engagement with the thimble 2'1. and also on the free end of a lazy tongs 25. The'lazy tongs 25 comprise a number of pivoted lever couples of usual 'c'onstriiict'ion, the lowermost links being pivotally' connected to the foot block 26 at the end of the'rod 19. I Apull rod 27 is opera-tive'ly connected by nieanso't a bracket 28 to one of the lower couples to open the various 2 couples for elongating the lazy tongs to the position shown in Figures 5 and 6 of upward theie- 'iormed thereon. From the cover 17 is 'susthe drawings. The upper ends of the my tongs are pivotally connected to a coupling block 29, wlueh is passed through the platform 22 to receive a cross pin 30, which,

as shown in Figure 3 ot the drawings, e.\

tends above the platform 2o, spanning the opening 24 therein;

To the pull rod 27 isconnected the flushin}: lever 31, the chain 32'l orn'iing a flex- 1hle connection therebetween. The lever 31 is operated by the pull chain and handle.

attached thereto common to flushing tank constructions.

hen constructed and arranged in accordance with the present invention, the siphon is operated by liftingthe lever 31 and the rod '27 attached thereto. By lifting the rod 27 the bracketQS is raised and the lower link of the lazy tongs 25 connected therewith is elongated, until it engages the;

bottom of the tube 20, to be arrestedjthere by. As may be seen by reference to Fig uresd and 5, whenthe rod 27 and bracket 28 are raised until the said bracket engages the tube 20, the table 22 andthe plate 23 are carried well up to the top of the riser 12. The speed of the movement of the valve plate 23 is proportioned to the difference in the movement between the plate 23 and the v table 22 and the bracket 28. If, therefore, the bracket 28 is lifted with what may be termed moderate speed, the plate 23 is elevated at a very rapid speed, and the water contained in the riser 12 is moved thereby 7 thereof, the usual danger of breaking the siphon is avoided.

The siphon is broken when the water in the tank 32 falls below the air pipe 33. When this happens, the vent pipe 33 admits air above the partition 14, and to the upper end of the siphon attachment, with the effect that the siphon is broken or discontinued.

When operating the apparatus, the pull rod 27 is vigorously raised and immediately released.'- In the rise of the plate 23 the pressure of the water supported thereby holds the same on the table 22, which closes the opening 24, trapping the water above the plate 23, with the effect that the same is lifted to above the partition 14, crowding the air held in the upper portion of the attachment therefrom, When active, the rod 27 is released, the weight of the parts connected therewith and of the lazy tongs, tab-1e 22 and plate 23, causing the same to drop when the resistance of the 7 water will operate to lift the plate 23 so that the opening 24 is fully exposed to permit the water to flow freely therethrough.

The flow of the Water continues to hold the plate 23 away from and above the table 22.

Any excess movement on the part of the plate 23 is prevented by the pin 30. i

esa-rec Claims:

1. A siphon attachmentfor liquid tanks comprising an open ended body formed to provide a riser and a spillway at one side thereof, said spillway being of a lesser crosssectional area than said riser, a cover closmg the upper end of sald body and forming a passageway beneath the same continuous wlth said riser and spillway, a valve movable vertically within said riser for effecting transfer of liquid therefrom to said spill- 'way, parallel hollow guides depending from said cover Within said riser, a valve table vertically slidable on said guides, a lazy tongs mounted on the lower end of one of said guides, said tongs supporting said valve table on its free end, and an operating rod disposed through the other of said guides andconnecting with said lazy tons for actuation thereof to raise said table and valve.

2. A siphon attachment for liquid tanks comprising a casing disposed within a tank, a partition in saidcasing, a siphon outlet in said casing at one side of said partition, a cover over said casing, depending guide pipes on said cover and extending into said casing on the opposite side of said partition,

a valve table slidable over said guide pipes, 

